Reference
Stylianos S. Karataglis, T. McNeilly, A. D. Bradshaw (1986): Lead and Zinc Tolerance of Agrostis capillaris L. and Festuca rubra L. Across a Mine-Pasture Boundary at Minera, North Wales. – Phyton, Annales Rei Botanicae, Horn – 26_1: 65 - 72.